According to the GCC man page, __section__ attributes should only be used
for global variables. However, the PROGMEM and ICACHE_RODATA macros use
this variable decorator even for local variables. Most of the time it works,
but when a static or inlined function tries to use a PROGMEM/PSTR/etc.
variable the compiler can throw an error like:
error: XXX causes a section type conflict with YYY
Change the PROGMEM macro to emit a section name that is unique (a combo
of the file, line, and counter variables to ensure uniqueness). The
standard linker script will place them properly in .IROM without
any changes.
Fixes#5036 and others.
* add begin(port) to esp8266webserver, move some strings to flash, some refactoring
* Moved more strings to flash, unified some strings
* move mimetable strings into a standalone file
* more string moves to flash, remove duplicates, refactor of template method, minor styling
* Reverted moving small string to flash (no heap advantage, reduces bin size)
The extension -> MIME type routine uses lots of constant strings which end
up in the RODATA segment of RAM. Refactor the comparison to use a table of
strings stored in PMMEM instead, freeing ~370 bytes for the heap.
* Suppressed -Wunused-parameter and -Wunused-function by casting to void unused identifiers.
* Explicit initialization of all fields to suppress -Wmissing-field-initializers.
* Fixed signed/unsigned integer comparison.
* memset initialization of structs.
* More -Wunused-parameter fixes.
